* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    scroll-behavior: smooth;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 现代化配色系统 */
:root {
    --primary-color: #1e3a8a;        /* 深蓝色 - 主色调 */
    --primary-light: #3b82f6;        /* 亮蓝色 - 主色调浅色版 */
    --primary-dark: #1e40af;         /* 深蓝色 - 主色调深色版 */
    --accent-color: #f59e0b;         /* 琥珀色 - 强调色 */
    --accent-light: #fbbf24;         /* 浅琥珀色 */
    --text-primary: #1f2937;         /* 深灰色 - 主要文字 */
    --text-secondary: #6b7280;       /* 中灰色 - 次要文字 */
    --text-light: #9ca3af;           /* 浅灰色 - 辅助文字 */
    --background-primary: #ffffff;    /* 白色背景 */
    --background-secondary: #f8fafc;  /* 浅灰背景 */
    --background-accent: #f1f5f9;     /* 强调背景 */
    --border-color: #e5e7eb;         /* 边框颜色 */
    --shadow-light: rgba(0, 0, 0, 0.05);
    --shadow-medium: rgba(0, 0, 0, 0.1);
    --shadow-heavy: rgba(0, 0, 0, 0.15);
}

/* 顶部横幅样式 */
.hero {
    height: 100vh;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.85), rgba(30, 64, 175, 0.75)), url('images/娱乐·曼城球场.jpg') center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(30, 58, 138, 0.1), rgba(59, 130, 246, 0.1));
    z-index: 1;
}

.hero-content {
    z-index: 2;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    font-weight: bold;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.title-main {
    font-size: 3rem;
    line-height: 1.2;
    font-weight: 700;
    color: #ffffff;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.title-sub {
    font-size: 2rem;
    line-height: 1.3;
    font-weight: 500;
    color: var(--accent-light);
    opacity: 0.95;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    align-items: center;
}

.subtitle-highlight {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--accent-color);
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
}

.subtitle-detail {
    font-size: 1.3rem;
    font-weight: 400;
    color: #ffffff;
    opacity: 0.9;
}

.cta-button {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border: none;
    padding: 18px 40px;
    font-size: 1.2rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.4s ease;
    box-shadow: 0 8px 25px var(--shadow-medium);
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px var(--shadow-heavy);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

/* Hero部分新增样式 */
.hero-highlight {
    margin-bottom: 2rem;
}

.highlight-badge {
    background: linear-gradient(45deg, var(--accent-color), var(--accent-light));
    color: var(--background-primary);
    padding: 8px 20px;
    border-radius: 25px;
    font-weight: bold;
    font-size: 1rem;
    display: inline-block;
    animation: pulse 2s infinite;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 6px 20px rgba(245, 158, 11, 0.5);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
    }
}

/* 导航栏样式 */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px var(--shadow-light);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: var(--accent-color);
}

/* 通用样式 */
.section {
    padding: 5rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.bg-light {
    background: var(--background-secondary);
}

/* 项目简介样式 */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.content-item {
    background: var(--background-primary);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-medium);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.content-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-heavy);
}

.content-item h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

/* 新增：内容项图标样式 */
.item-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-align: center;
}

.content-item .item-icon,
.team-intro .item-icon,
.responsibilities .item-icon,
.mentor-resources .item-icon {
    display: block;
    margin: 0 auto 1rem auto;
}

.arrangement-item .item-icon {
    display: inline-block;
    margin-right: 1rem;
    vertical-align: middle;
}

.arrangement-item h3 {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

/* 核心优势样式 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.advantage-item {
    text-align: center;
    padding: 2rem;
    background: var(--background-primary);
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-medium);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-heavy);
    border-color: var(--primary-light);
}

.advantage-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.advantage-item h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

/* 学校筛选样式 */
.schools-content {
    display: grid;
    gap: 3rem;
}

.system-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.system-item {
    background: var(--background-primary);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
    box-shadow: 0 3px 10px var(--shadow-light);
    transition: all 0.3s ease;
}

.system-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px var(--shadow-medium);
}

.system-item h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.criteria-list, .exclusive-partnership ul {
    list-style: none;
    margin-top: 1rem;
}

.criteria-list li, .exclusive-partnership li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

/* 行程安排样式 */
.itinerary-content {
    display: grid;
    gap: 2rem;
}

.arrangement-item {
    background: var(--background-primary);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-medium);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.arrangement-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px var(--shadow-heavy);
}

.schedule-item {
    margin-bottom: 1rem;
    padding: 1rem;
    background: var(--background-accent);
    border-radius: 8px;
    border-left: 3px solid var(--accent-color);
}

.schedule-item ul {
    margin-top: 0.5rem;
    margin-left: 1rem;
}

/* 团队样式 */
.team-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.responsibility-list {
    list-style: none;
    margin-top: 1rem;
}

.responsibility-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.responsibility-list li:before {
    content: "✓ ";
    color: var(--accent-color);
    font-weight: bold;
}

/* 项目价值样式 */
.value-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.value-item {
    background: var(--background-primary);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-medium);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.value-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-heavy);
}

.value-item h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

/* 评价样式 */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial-item {
    background: var(--background-primary);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-medium);
    border: 1px solid var(--border-color);
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    transition: all 0.3s ease;
}

.testimonial-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px var(--shadow-heavy);
}

.testimonial-avatar {
    font-size: 2rem;
    flex-shrink: 0;
}

.testimonial-content p {
    font-style: italic;
    margin-bottom: 1rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.testimonial-author {
    font-weight: bold;
    color: var(--accent-color);
    font-size: 0.9rem;
}

/* 报名流程样式 */
.registration-process {
    display: grid;
    gap: 2rem;
}

.process-step {
    display: flex;
    align-items: flex-start;
    gap: 2rem;
    background: var(--background-primary);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-medium);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.process-step:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px var(--shadow-heavy);
}

.step-number {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(30, 58, 138, 0.3);
}

.step-content h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

/* FAQ样式 */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--background-primary);
    margin-bottom: 1rem;
    border-radius: 10px;
    box-shadow: 0 3px 10px var(--shadow-medium);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: 0 5px 15px var(--shadow-heavy);
}

.faq-question {
    background: var(--primary-color);
    color: white;
    padding: 1.5rem;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s ease;
}

.faq-question:hover {
    background: var(--primary-dark);
}

.faq-answer {
    padding: 1.5rem;
    background: var(--background-primary);
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

/* 公司介绍样式 */
.company-overview {
    margin-bottom: 4rem;
}

.company-intro {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 3rem;
    border-radius: 20px;
    text-align: center;
    margin-bottom: 3rem;
}

.company-intro h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: #ffd700;
}

.company-description {
    font-size: 1.2rem;
    line-height: 1.8;
    font-weight: 500;
}

/* 全球办公室网络样式 */
.global-offices {
    margin-bottom: 4rem;
}

.global-offices h3 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: #2c3e50;
    font-weight: bold;
}

.offices-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.office-item {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.office-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
}

.office-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
    border-color: #667eea;
}

.headquarters {
    background: linear-gradient(135deg, #fff 0%, #f8f9ff 100%);
    border: 2px solid #ffd700;
}

.headquarters::before {
    background: linear-gradient(90deg, #ffd700, #ffed4e);
}

.office-flag {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.office-item h4 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: bold;
}

.office-location {
    color: #666;
    font-weight: 600;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.office-description {
    color: #888;
    font-style: italic;
    font-size: 0.95rem;
}

/* 使命愿景样式 */
.mission-points {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.mission-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(255,255,255,0.1);
    padding: 1.5rem;
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.mission-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.mission-item p {
    margin: 0;
    font-weight: 500;
}

/* 合作伙伴网格样式 */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.partner-item {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    border-left: 4px solid #667eea;
}

.partner-item h4 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.partner-item ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.partner-item li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #eee;
    position: relative;
    padding-left: 1.5rem;
}

.partner-item li:before {
    content: "✓";
    color: #667eea;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.partner-item li:last-child {
    border-bottom: none;
}

.company-content {
    display: grid;
    gap: 3rem;
}

.founder-info {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    border-left: 4px solid #e74c3c;
}

.founder-info h4 {
    color: #e74c3c;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

/* 底部样式 */
.footer {
    background: #2c3e50;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer h3 {
    margin-bottom: 1rem;
    color: #e74c3c;
}

.qr-code {
    background: #fff;
    color: #333;
    padding: 2rem;
    text-align: center;
    border-radius: 10px;
    margin-top: 1rem;
}

/* 新增：项目定义样式 */
.project-definition {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 3rem;
    border-radius: 15px;
    margin-bottom: 3rem;
    text-align: center;
}

.definition-text {
    font-size: 1.3rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    font-weight: 500;
}

.project-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: #ffd700;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* 受众定位样式 */
.target-audience {
    margin-bottom: 3rem;
}

.audience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.audience-item {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.audience-item:hover {
    border-color: #e74c3c;
    transform: translateY(-5px);
}

.audience-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.audience-item h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.audience-note {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 10px;
    border-left: 4px solid #e74c3c;
    font-weight: 500;
    margin-top: 1rem;
}

/* 核心目标样式 */
.core-goals {
    margin-bottom: 3rem;
}

.goals-list {
    display: grid;
    gap: 1.5rem;
    margin-top: 2rem;
}

.goal-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.goal-item:hover {
    transform: translateX(10px);
}

.goal-number {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.goal-item p {
    margin: 0;
    font-weight: 500;
    color: #2c3e50;
}

/* 运作模式样式 */
.operation-model {
    margin-bottom: 2rem;
}

.model-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.model-item {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    border-top: 4px solid #e74c3c;
    transition: transform 0.3s ease;
}

.model-item:hover {
    transform: translateY(-5px);
}

.model-item h4 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.model-item p {
    line-height: 1.6;
    color: #555;
}

/* 图片画廊样式 */
.campus-gallery,
.activities-gallery,
.campus-life-showcase {
    margin-top: 3rem;
    padding: 2rem 0;
}

.gallery-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
    color: #2c3e50;
    font-weight: bold;
}

.image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.gallery-item {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    position: relative;
}

.gallery-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
}

.gallery-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.gallery-item:hover .gallery-image {
    transform: scale(1.05);
}

.gallery-caption {
    padding: 1.5rem;
    text-align: center;
    font-weight: 600;
    color: #2c3e50;
    font-size: 1.1rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

/* 特殊样式：校园生活展示 */
.campus-gallery {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 20px;
    padding: 3rem 2rem;
    margin-top: 3rem;
}

.activities-gallery {
    background: linear-gradient(135deg, #fff5f5 0%, #fed7d7 100%);
    border-radius: 20px;
    padding: 3rem 2rem;
    margin-top: 3rem;
}

.campus-life-showcase {
    background: linear-gradient(135deg, #f0fff4 0%, #c6f6d5 100%);
    border-radius: 20px;
    padding: 3rem 2rem;
    margin-top: 3rem;
}

/* 图片加载动画 */
.gallery-image {
    opacity: 0;
    animation: fadeInImage 0.6s ease forwards;
}

@keyframes fadeInImage {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 为不同的画廊项目添加延迟动画 */
.gallery-item:nth-child(1) .gallery-image { animation-delay: 0.1s; }
.gallery-item:nth-child(2) .gallery-image { animation-delay: 0.2s; }
.gallery-item:nth-child(3) .gallery-image { animation-delay: 0.3s; }
.gallery-item:nth-child(4) .gallery-image { animation-delay: 0.4s; }
.gallery-item:nth-child(5) .gallery-image { animation-delay: 0.5s; }
.gallery-item:nth-child(6) .gallery-image { animation-delay: 0.6s; }

/* 响应式设计 */
@media (max-width: 768px) {
    .title-main {
        font-size: 2.2rem;
    }
    
    .title-sub {
        font-size: 1.6rem;
    }
    
    .subtitle-highlight {
        font-size: 1.4rem;
    }
    
    .subtitle-detail {
        font-size: 1.1rem;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .process-step {
        flex-direction: column;
        text-align: center;
    }
    
    .testimonial-item {
        flex-direction: column;
        text-align: center;
    }
    
    .project-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .audience-grid {
        grid-template-columns: 1fr;
    }
    
    .model-grid {
        grid-template-columns: 1fr;
    }
    
    .goal-item {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .project-definition {
        padding: 2rem;
    }
    
    .definition-text {
        font-size: 1.1rem;
    }
    
    .hero-highlight {
        margin-bottom: 1.5rem;
    }
    
    .highlight-badge {
        font-size: 0.9rem;
        padding: 6px 16px;
    }
    
    .arrangement-item h3 {
        flex-direction: column;
        text-align: center;
    }
    
    .arrangement-item .item-icon {
        margin-right: 0;
        margin-bottom: 0.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .title-main {
        font-size: 1.8rem;
    }
    
    .title-sub {
        font-size: 1.3rem;
    }
    
    .subtitle-highlight {
        font-size: 1.2rem;
    }
    
    .subtitle-detail {
        font-size: 1rem;
    }
    
    .content-grid,
    .advantages-grid,
    .value-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .audience-icon {
        font-size: 2rem;
    }
    
    .goal-number {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
}